SPT7861SCS datasheet, PDF - EEWORLD Datasheet

SPT7861SCS: Description10-BIT, 40 MSPS, 160 mW A/D CONVERTER; File Size87KB，11 Pages; ManufacturerFairchild; Websitehttp://www.fairchildsemi.com/

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10-BIT, 40 MSPS, 160 mW A/D CONVERTER

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SPT7861

10-BIT, 40 MSPS, 160 mW A/D CONVERTER

TECHNICAL DATA

JUNE 25, 2001

FEATURES

•

Monolithic 40 MSPS converter

160 mW power dissipation

On-chip track-and-hold

Single +5 V power supply

TTL/CMOS outputs

5 pF input capacitance

Low cost

Tri-state output buffers

High ESD protection: 3,500 V minimum

Selectable +3 V or +5 V logic I/O

APPLICATIONS

• All high-speed applications where low power

dissipation is required

• Video imaging

• Medical imaging

• Radar receivers

• IR imaging

• Digital communications

GENERAL DESCRIPTION

The SPT7861 is a 10-bit monolithic, low-cost, ultralow-

power analog-to-digital converter capable of minimum

word rates of 40 MSPS. This is a pin-compatible improved

version of the SPT7860. The on-chip track-and-hold func-

tion assures excellent dynamic performance without the

need for external components. The input drive require-

ments are minimized due to the SPT7861’s low input

capacitance of only 5 pF.

Power dissipation is extremely low at only 160 mW typical

at 40 MSPS with a power supply of +5.0 V. The digital out-

puts are +3 V or +5 V, and are user selectable. The

SPT7861 is pin-compatible with an entire family of 10-bit,

CMOS converters (SPT7835/40/50/55/60/61), which sim-

plifies upgrades. The SPT7861 has incorporated propri-

etary circuit design and CMOS processing technologies to

achieve its advanced performance. Inputs and outputs are

TTL/CMOS-compatible to interface with TTL/CMOS logic

systems. Output data format is straight binary.

The SPT7861 is available in 28-lead SOIC and 32-lead

small (7 mm square) TQFP packages over the commer-

cial temperature range.

BLOCK DIAGRAM

ADC Section 1

1:16

Mux

T/H

Auto-

Zero

CMP

11-Bit

SAR

D10 Overrange

D9 (MSB)

DAC

CLK In

Timing

and

Control

Enable

P15

P16

ADC Section 15

ADC Section 2

ADC Section 16

T/H

Auto-

Zero

CMP

11-Bit

SAR

DAC

11-Bit

16:1

Mux/

Error

Correction

Data

Valid

Ref

Reference Ladder

D0 (LSB)

REF

SPT7861SCS Related Products

	SPT7861SCS	SPT7861SCT	SPT7861
Description	10-BIT, 40 MSPS, 160 mW A/D CONVERTER	10-BIT, 40 MSPS, 160 mW A/D CONVERTER	10-BIT, 40 MSPS, 160 mW A/D CONVERTER

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